1. 15 Jan, 2020 24 commits
  2. 07 Jan, 2020 7 commits
  3. 03 Jan, 2020 1 commit
    • Vishnu Banavath's avatar
      drivers: add a driver for snoop control unit · c20c0525
      Vishnu Banavath authored
      
      
      The SCU connects one to four Cortex-A5/Cortex-A9 processors
      to the memory system through the AXI interfaces.
      
      The SCU functions are to:
      - maintain data cache coherency between the Cortex-A5/Cortex-A9
        processors
      - initiate L2 AXI memory accesses
      - arbitrate between Cortex-A5/Cortex-A9 processors requesting
        L2 accesses
      - manage ACP accesses.
      
      Snoop Control Unit will enable to snoop on other CPUs caches.
      This is very important when it comes to synchronizing data between
      CPUs. As an example, there is a high chance that data might be
      cache'd and other CPUs can't see the change. In such cases,
      if snoop control unit is enabled, data is synchoronized immediately
      between CPUs and the changes are visible to other CPUs.
      
      This driver provides functionality to enable SCU as well as enabling
      user to know the following
      - number of CPUs present
      - is a particular CPU operating in SMP mode or AMP mode
      - data cache size of a particular CPU
      - does SCU has ACP port
      - is L2CPRESENT
      
      Change-Id: I0d977970154fa60df57caf449200d471f02312a0
      Signed-off-by: default avatarVishnu Banavath <vishnu.banavath@arm.com>
      c20c0525
  4. 29 Dec, 2019 1 commit
  5. 26 Dec, 2019 2 commits
  6. 20 Dec, 2019 5 commits
    • Paul Beesley's avatar
      spm-mm: Remove mm_svc.h header · 962c44e7
      Paul Beesley authored
      
      
      The contents of this header have been merged into the spm_mm_svc.h
      header file.
      
      Change-Id: I01530b2e4ec1b4c091ce339758025e2216e740a4
      Signed-off-by: default avatarPaul Beesley <paul.beesley@arm.com>
      962c44e7
    • Paul Beesley's avatar
      spm-mm: Refactor spm_svc.h and its contents · 0bf9f567
      Paul Beesley authored
      
      
      Change-Id: I91c192924433226b54d33e57d56d146c1c6df81b
      Signed-off-by: default avatarPaul Beesley <paul.beesley@arm.com>
      0bf9f567
    • Paul Beesley's avatar
      spm-mm: Refactor secure_partition.h and its contents · aeaa225c
      Paul Beesley authored
      
      
      Before adding any new SPM-related components we should first do
      some cleanup around the existing SPM-MM implementation. The aim
      is to make sure that any SPM-MM components have names that clearly
      indicate that they are MM-related. Otherwise, when adding new SPM
      code, it could quickly become confusing as it would be unclear to
      which component the code belongs.
      
      The secure_partition.h header is a clear example of this, as the
      name is generic so it could easily apply to any SPM-related code,
      when it is in fact SPM-MM specific.
      
      This patch renames the file and the two structures defined within
      it, and then modifies any references in files that use the header.
      
      Change-Id: I44bd95fab774c358178b3e81262a16da500fda26
      Signed-off-by: default avatarPaul Beesley <paul.beesley@arm.com>
      aeaa225c
    • Paul Beesley's avatar
      spm: Remove SPM Alpha 1 prototype and support files · 538b0020
      Paul Beesley authored
      
      
      The Secure Partition Manager (SPM) prototype implementation is
      being removed. This is preparatory work for putting in place a
      dispatcher component that, in turn, enables partition managers
      at S-EL2 / S-EL1.
      
      This patch removes:
      
      - The core service files (std_svc/spm)
      - The Resource Descriptor headers (include/services)
      - SPRT protocol support and service definitions
      - SPCI protocol support and service definitions
      
      Change-Id: Iaade6f6422eaf9a71187b1e2a4dffd7fb8766426
      Signed-off-by: default avatarPaul Beesley <paul.beesley@arm.com>
      Signed-off-by: default avatarArtsem Artsemenka <artsem.artsemenka@arm.com>
      538b0020
    • Paul Beesley's avatar
      Remove dependency between SPM_MM and ENABLE_SPM build flags · 3f3c341a
      Paul Beesley authored
      
      
      There are two different implementations of Secure Partition
      management in TF-A. One is based on the "Management Mode" (MM)
      design, the other is based on the Secure Partition Client Interface
      (SPCI) specification. Currently there is a dependency between their
      build flags that shouldn't exist, making further development
      harder than it should be. This patch removes that
      dependency, making the two flags function independently.
      
      Before: ENABLE_SPM=1 is required for using either implementation.
              By default, the SPCI-based implementation is enabled and
              this is overridden if SPM_MM=1.
      
      After: ENABLE_SPM=1 enables the SPCI-based implementation.
             SPM_MM=1 enables the MM-based implementation.
             The two build flags are mutually exclusive.
      
      Note that the name of the ENABLE_SPM flag remains a bit
      ambiguous - this will be improved in a subsequent patch. For this
      patch the intention was to leave the name as-is so that it is
      easier to track the changes that were made.
      
      Change-Id: I8e64ee545d811c7000f27e8dc8ebb977d670608a
      Signed-off-by: default avatarPaul Beesley <paul.beesley@arm.com>
      3f3c341a